The tables show the mass, volume, and appearance of four unknown substances and the densities of four known substances. Using the tables, what is unknown substance S?

Substance S is GLYCEROL.

Explanation:

To know what substance S represent, let us determine the density of substance S.

From the question given above, the following data were obtained:

Mass of S = 92.09 g

Volume of S = 73.09 mL

Density of S =..?

Density = mass /volume

Density of S = 92.09/73.09

Density of S = 1.26 g/mL

Finally, we shall determine what substance S represent as follow:

Comparing the density of substance S (i.e 1.26 g/mL) with those given in question above, substance S is GLYCEROL.

rosa was looking for patterns to predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.she should record 2licl + 3o2.

in the last row of the table. it is the thermal decomposition of chlorate lithium, hence, she should record these products as: lithium chloride ( 2licl ) and oxygen ( 3o2 )   2 > 2 licl + 3o2.